METHOD OF SEPARATION OF PARTICLES BY DENSITY USING A METHOD OF HEAVY-MEDIUM SEPARATION Russian patent published in 2020 - IPC B03B5/46 B07B4/08 

FIELD: technological processes.

SUBSTANCE: invention relates to methods for separation of useful components from mixtures, separation of mixtures of solid particles by density and size, particularly metals, platinum, gold from mining material. Method of separating particles by density using a method of heavy-duty separation involves mixing solid substances with a carrier heavy medium, given density of which is greater than the density of light particles and less than the density of heavy particles, imparting motion to medium of motion in working cavity of separator under action of pressure drop, resulting in more dense particles under action of gravitational force are shifted relative to flow of bearing medium, and lighter ones float up under action of Archimedean force, providing separation of particles into heavy and light fractions with their subsequent removal from working cavity. Carrier medium used is xenon, the density of which is selected depending on the density of the separated particles by changing the pressure of xenon at the inlet of the separator with subsequent reduction of pressure as the particles with different density are deposited. After xenon is withdrawn from the working cavity of the separator, xenon is returned to the initial state to perform a closed cycle.

EFFECT: more complete extraction of minerals from ore, higher efficiency.

1 cl, 1 dwg